The New Unidentified TeV Source in Cygnus (TeV J2032+4130): HEGRA IACT-System Results
نویسندگان
چکیده
The first unidentified TeV source in Cygnus is confirmed by follow-up observations carried out in 2002 with the HEGRA stereoscopic system of Čerenkov Telescopes. Using all ∼279 hrs of data, this new source TeV J2032+4130, is steady over the four years of data taking, is extended with radius 6.2′, and has a hard spectrum with photon index −1.9. Its location places it at the edge of the core of the extremely dense OB association, Cygnus OB2. Its integral flux above energies E > 1 TeV amounts to ∼3% of the Crab nebula flux. No counterpart at radio, optical and X-ray energies is as-yet seen, leaving TeV J2032+4130 presently unidentifed. Summarised here are observational parameters of this source and brief astrophysical interpretation.
منابع مشابه
HEGRA discovery of the first unidentified TeV source
The first unidentified TeV source in the Cygnus region is confirmed by follow-up observations carried out in 2002 with the HEGRA stereoscopic system of air Cherenkov telescopes. Using the combined 279 h of data, this new source TeV J2032+4130, appears to be steady in flux over the four years of data taking, it shows an extension with radius 6.20, and has a hard spectrum with photon index 1:9 be...
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